Users Guide

62 | Troubleshooting
Universal Serial Bus (USB) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
USB interface is
not working
USB peripherals
are not working
• Check that your monitor is turned On.
• Reconnect the up
stream cable to your computer.
• Reconnect the USB p
eripherals (downstream connector).
• S
witch Off and then turn On the monitor again.
• Re
boot the computer.
• S
ome USB devices like external portable HDD require higher
electric current; connect the device directly to the
computer system.
High Speed
US
B 3.0
interface is
slow
High Speed USB
3.
0 peripherals
working slowly or
not working at all
• Check
that your computer is USB 3.0-capable.
• S
ome computers have USB 3.0, USB 2.0, and USB 1.1 ports.
Ensure that the correct USB port is used.
• Reconnect the up
stream cable to your computer.
• Reconnect the USB p
eripherals (downstream connector).
• Re
boot the computer.
Mobile High-Definition Link (MHL) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
MHL interface
is not working
Can not see MHL
device image
shown on
monitor
• Ensure
your MHL cable and MHL device are MHL certified.
• Check your MHL
device is turned On.
• Check
your MHL device is not in Standby mode.
• Check
physical MHL cable connection is corresponding to
input source selected on OSD Menu i.e., HDMI (MHL) 1 or
HDMI (MHL) 2.
• W
ait for 30 seconds after connecting MHL cable as some
MHL devices require longer recovery time.